Briquette coating machine



April 25, 1939.

A. J. LUNDWALL ER'IQUETTE COATING MACHINE Filed July 27, 1937 5 Sheets-Sheet 2 IHIII r I J l mu April 1939- A. J. LUNDWALL 2,155,500

BRIQUETTE COATING MACHINE Filed July 27, 1937 3 Sheets-Sheet z 3mm 19466767 JLwvDn ALL Patented Apr. 25, 1939 UNITED STATES PATENT OFFICE Campbell, Wyant &

Cannon Foundry Company, Muskegon Heights, Mich., a corporation of Michigan Application July 27, 1937, Serial No. 155,890

3 Claims.

My present invention relates to improvements in briquette coating machines in which a plurality of rotating arms operate in conjunction with a tank container; and the objects of improvement are, first, to provide a simple briquette coating machine; second, to provide a machine that will coat briquettes by successive continuous rotation; third, to provide a briquette coating machine that will operate long periods without requiring cleaning; fourth, to provide a briquette coating machine that will require the minimum of attention.

I attain these named objects and others, ap pearing from a perusal of the following description when taken in connection with the accompanying drawings, in which:

Figure 1 is a plan view looking downward on the top of the machine.

Figure 2 is a side elevation of the machine in which the drive gear housing is broken to better illustrate the speed reduction gearing, and

Figure 3 is a sectional view of the machine on a vertical plane taken at line OO of Fig. 1.

Throughout the drawings, similar numerals refer to similar parts, and referring thereto:

Numeral refers toa tank in which the coating solution, usually consisting of water and Portland cement, is mixed for coating briquettes produced by compressing metal cuttings; 2 the tank in which the briquettes are coated by immersion; 3 a runway for feeding the briquettes to the tank 2 such as by rolling the briquettes into the tank by gravity. 4 represents a revolvable shaft extending across the tanks I and 2 supported by bearings 5 and 6 and carrying briquette elevating arms I whereby the briquettes are removed from the tank 2 and coating solution 8 and delivered to the rollway 9. The curved ends I and forward extended member II of the arms I pick up the briquettes in the solution 8 and retain them on the arms 1 until they have reached the position designated by dotted lines l2, from where the briquettes freely roll down the incline of rollway 9 by force of gravity. Also carried by the shaft 4 are solution mixing paddle-like arms I3 having faces inclined to the axis of the shaft 4 whereby the coating solution in tank I is agitated and maintained in substantially uniform consistency. Opening l4 through the partition wall between tank compartment l and 2 allows the coating solution to flow from tank I into tank 2, thereby replenishing the solution in tank 2, as it is removed in coating the briquettes.

At one end of shaft 4 and secured thereto is worm gear I rotated by worm l6 having extended shaft 11 revolving in bearings I8 and I9 and having secured thereto driving gear 20, driven by pinion 2| on shaft 22 to which the electric motor 23 is connected through its shaft 24 and coupling 25. Bearings 26 and 21 support the 5 pinion shaft 22, which, together with the named gears, is protected against injury from the coating solution by housing 28 and cover 29 thereof. The bottom wall 30 of tank 2 is part circular, corresponding to the path scribed by the curved ends l0 of the arms "I and part inclined as at 3i whereby the briquettes designated as 32 roll into the coating solution by gravity from the rollway 3. Fig. 3 illustrates one briquette as it rolls to the tank compartment 2, one briquette within the coating solution 8 as it is absorbing the coating, and one coated briquette on the rollway 9 as it leaves the briquette coating machine.

In the operation of my briquette coating machine, a solution, usually of Portland cement and water, is mixed in the tank compartment I from where it flows through the opening I4 to tank 2. The motor 23 is then started by the usual manner employed in starting electric motors, which through the gearing revolves the shaft 4, the arms 'I and paddle-like arms I3, which mixes the coating solution and causes it to flow through the opening I4 to the compartment 2. With the machine in operation and having sufiicient solution in the tanks, the briquettes which are cylindrical in form, are placed on the rollway 3 from where they roll into the solution 8 until they reach the lowermost point of the tank compartment 2 from where the curved ends of revolving arms I engage the briquette and carry it to and deposit it on the rollway 9. Frequently two or more briquettes enter the tank 2 and coating solution therein at the same time. When this occurs, the arms I pick up the one entering the curved portion thereof first and in their rotary 4 excursion force the adjacent briquettes up the incline 3| until they clear the said first briquette, when they will again roll back into the coating solution.

Having described my present invention, the rights I desire to secure are disclosed in the following claims:

1. A briquette coating machine comprising in combination a tank having therein a briquette coating mixing portion and a briquette coating portion, the said portions separated from each other by a partition having an aperture therethrough whereby the briquette coating mixture can be delivered from the said mixing portion to the said coating portion, a rotatable shaft 86 extending transversely of the said tank and carried in bearings thereon, mixing means for said mixture comprising a plurality of paddles having blades inclined to the axis of said shaft, secured to the shaft and extending into the said mixing portion of the said tank, a plurality of arms secured to said shaft and extending into the coating portion of the tank and having their outer end portions curved and extending in the direction of the shafts rotation and a member thereon in spaced relation to the end thereof also extending in the direction of said shafts rotation, a gear secured to the said shaft for rotating the said shaft, and a gear engaging the first said gear whereby the machine is operated, a rollway for delivering the briquettes into said coating portion of the tank and against said arms in opposite direction to the rotation thereof and a rollway for receiving the briquettes from said arms when elevated thereby from the coating portion of said tank.

2. A briquette coating machine comprising in combination a tank having therein a briquette coating mixing portion and a briquette coating portion separated from each other by a partition having an aperture therethrough whereby briquette coating mixture can be delivered from the said mix ng portion to the said coating portion, a rotatable shaft extending transversely of the said tank and carried in bearings thereon, mixing paddles comprising a plurality of arms having blades rotated by the shaft and extending into the said mixing portion of the said tank, a plurality of arms secured to said shaft and extend- 35 ing into the coating portion of the tank, the said arms having their outer end portions curved and extending in the direction of the shafts rotation and a member thereon in spaced relation to said end also extending in the general direction of said shafts rotation, a gear secured to the said shaft for rotating the said shaft, and a gear engaging the first said gear whereby the machine is operated, a rollway for delivering the briquettes to said coating portion of the tank and against said arms in opposite direction to the rotation thereof and a rollway for receiving the briquettes from said arms when elevated thereby from the coating portion of said tank.

3. A briquette coating machine comprising in combination a tank having therein a briquette coating mixing portion and a briquette coating portion separated from each other by a partition having an aperture therethrough whereby briquette coating mixture can be delivered from the said mixing portion to the said coating portion, a rotatable shaft extending transversely of the said tank and carried in bearings thereon, mixing means comprising a plurality of paddles carried by the shaft and extending into the said mixing portion of the said tank, a plurality of arms secured to said shaft and extending into the coating portion of the tank, the said arms having their outer end portions extending in the direction of the shafts rotation and a member in spaced relation to said ends extending in the direction of said shafts rotation, a gear secured to the said shaft for rotating the said shaft, and a gear engaging the first said gear whereby the machine is operated.

ALBERT J. LUNDWALL. 

